ABSTRACT
Building greenery systems, i.e. green roofs and vertical greening systems, help mitigate the urban heat island (UHI) effect and improve the urban microclimate. Through different potential building-scale effects, they provide nature-based solutions to urban heat stress, while also reducing energy consumption in both cooling and heating seasons. Green roofs have the potential to reduce energy consumption by up to 100% for cooling and 73% for heating purposes when compared to common roofs. Vertical greenery systems, in turn, may reduce the energy consumed for cooling by up to 66%, although further studies are needed in winter to obtain contrasted results.
